Tracking Intramolecular Interactions in Flexibly Linked Binuclear Platinum(II) Complexes
摘要:
In this work we describe the synthesis and the photophysical and electrochemical characterization of binuclear Pt-11 complexes. Using a modular click chemistry approach, we decorated different flexible bridging units with (bpy)Pt-II bisacetylides (bpy = 2,2'-bipyridine). Intramolecular excimer formation originating from Pt-II-Pt-II and pi-pi interactions was investigated by steady-state and time-resolved emission spectroscopy in dilute solution. We observed that linkers bringing the metallic centers in close proximity favor both ground-state coupling and excimer formation. These interactions lead to changes in the photophysical and electrochemical properties, which can be tuned by the choice of solvent.
Tracking Intramolecular Interactions in Flexibly Linked Binuclear Platinum(II) Complexes
摘要:
In this work we describe the synthesis and the photophysical and electrochemical characterization of binuclear Pt-11 complexes. Using a modular click chemistry approach, we decorated different flexible bridging units with (bpy)Pt-II bisacetylides (bpy = 2,2'-bipyridine). Intramolecular excimer formation originating from Pt-II-Pt-II and pi-pi interactions was investigated by steady-state and time-resolved emission spectroscopy in dilute solution. We observed that linkers bringing the metallic centers in close proximity favor both ground-state coupling and excimer formation. These interactions lead to changes in the photophysical and electrochemical properties, which can be tuned by the choice of solvent.
NHC-Iridium-Catalyzed Deoxygenative Coupling of Primary Alcohols Producing Alkanes Directly: Synergistic Hydrogenation with Sodium Formate Generated in Situ
作者:Zeye Lu、Qingshu Zheng、Siqi Yang、Chun Qian、Yajing Shen、Tao Tu
DOI:10.1021/acscatal.1c02700
日期:2021.9.3
The direct conversion of alcohols into long-chain alkanes is an attractive but extremely challenging approach for biomass upgrading. Here, we describe the highly selective deoxygenative coupling of aryl ethanols with primary alcohols to produce alkanes, using a bis-N-heterocyclic carbene iridium (bis-NHC-Ir) complex as the catalyst. Up to quantitative yields and selectivity with a broad substrate scope
Covalent Dimers of 1,3-Diphenylisobenzofuran for Singlet Fission: Synthesis and Electrochemistry
作者:Akin Akdag、Abdul Wahab、Pavel Beran、Lubomír Rulíšek、Paul I. Dron、Jiří Ludvík、Josef Michl
DOI:10.1021/jo502004r
日期:2015.1.2
The synthesis of covalent dimers in which two 1,3-diphenylisobenzofuran units are connected through one phenyl substituent on each is reported. In three of the dimers, the subunits are linked directly, and in three others, they are linked via an alkane chain. A seventh new compound in which two 1,3-diphenylisobenzofuran units share a phenyl substituent is also described. These materials are needed
[EN] MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES<br/>[FR] MATÉRIAUX POUR DISPOSITIFS ÉLECTROLUMINESCENTS ORGANIQUES
申请人:MERCK PATENT GMBH
公开号:WO2019101833A1
公开(公告)日:2019-05-31
The present invention relates to compounds of the formula (1) which are suitable for use in electronic devices, in particular organic electroluminescent devices, and to electronic devices which comprise these compounds.
Donor-σ-acceptor molecules with alkyl σ-linkers of different lengths: Exploration on the exciplex emission and their use for efficient organic light-emitting diodes
作者:Yongjun Song、Renyou Yu、Xianwen Meng、Lei He
DOI:10.1016/j.dyepig.2022.110876
日期:2022.12
neat film. Vacuum-evaporated and solution-processedorganiclight-emittingdiodes using 1–3 as the emitters show sky-blue and blue electroluminescence with peak external quantum efficiencies of up to 14.5% and 13.0%, respectively. The efficiency is among the highest for solution-processed blue organiclight-emittingdiodes based on small-molecule exciplex emitters reported so far.